getty keeps dying for console

[Dagmar Bendová]

I have similar problem as thread 21 Nov 2001.
I have a getty process for the console that dies frequently too. The process getty runs a few seconds and then die off. The process getty is configured as respawn in /etc/inittab so the process init tries to keep them running.
I can find this message after each dying off in syslog:
getty: cannot open "console". errno: 6

This is part of configuration of my /etc/inittab
cons:123456:respawn:/usr/sbin/getty console console
ls -la /dev/console:
crw--w--w- 1 root sys 0 0x000000 Nov 10 09:24 /dev/console

I've tried insf -evd cn with installing succesfully.
It is not problem on terminal or cable. I ve used both (terminal and serial cable) to another server and it worked fine.

Is there any hw problem in serial port?
Thanks for answers.
Dagmar

[Steve Steel]

Hi


Suspect IO Card


Steve Steel

[Robert-Jan Goossens]

Dagmar,

Just checked my permissions of /dev/console.

crw--w--w- 1 root tty 0 0x000000 May 2 04:46 console

Try to change the group to tty.

Regards,
Robert-Jan

[Dagmar Bendová]

I' ve changed the permissions on the special file /dev/console with no effect.
Thanks.
Dagmar

[Stephen Keane]

Do you have a stanza in /etc/gettdefs for "console" (it'll probably have the detail commented out)

e.g.

#
# This entry is used for the console
#

console # B9600 SANE CLOCAL CS8 ISTRIP IXANY TAB3 HUPCL
# B9600 SANE CLOCAL CS8 ISTRIP IXANY TAB3 HUPCL
#Console Login: #console

Also check permissions on /etc/gettydefs

-r--r--r-- 1 bin bin 2491 Nov 14 2000 /etc/gettydefs

[Kent Ostby]

ENXIO 6 /* No such device or address */

You should have three device files that look like this:

crw--w--w- 1 root sys 0 0x000000 Mar 31 17:18 /dev/console
crw--w--w- 2 bin bin 0 0x000000 Jan 25 02:08 /dev/syscon
crw--w--w- 2 bin bin 0 0x000000 Jan 25 02:08 /dev/systty

Note that /dev/syscon and /dev/systty are linked.

If the files look okay then check your cable and make sure the console is connected securely to the port.

[Ajitkumar Rane]

Hello Dagmar,

Error no 6 probably is "timeout/offline"
Does the console get in powersaving mode, or may be the communication port on the console has problems. or
Do you have any reference to device file by the name /dev/tty0 in /etc/inittab which is also considered the console.


Rgds,

ajit

[Dagmar Bendová]

Thank you very much for your answers.

There is no problem on the console or the cable.
I've tried to connect same cable and same terminal to another server and console prompt showed itself immediately.

Device file /dev/tty0 doesn´t exist on the server either in /etc/inittab.

There exists four files on the server with this permission:

crw--w--w- 1 root tty 0 0x000000 Nov 10 09:24 /dev/console
crw--w--w- 2 bin bin 0 0x000000 May 29 2005 /dev/syscon
crw--w--w- 2 bin bin 0 0x000000 May 29 2005 /dev/systty
-r--r--r-- 1 bin bin 2491 Nov 14 2000 /etc/gettydefs

Parts of /etc/gettydefs:
console # B9600 SANE CLOCAL CS8 ISTRIP IXANY TAB3 HUPCL
# B9600 SANE CLOCAL CS8 ISTRIP IXANY TAB3 HUPCL
#Console Login: #console

[Dagmar Bendová]

I have two same servers under control - same type K580, same OS 11i. One of them has problem with console.

I ve tried to do some test on the server where the console works well. I´ve unplugged the serial cable from that server and I´ve done "init q" for sureness.
The result is: the getty process keeps running and I am able to send the message without mistake on the special device of the console (/dev/console).

It sends me back to "bad" server. There has to be something wrong (hardware fault) on its serial port.

[Steven E. Protter]

Shalom Dagmar,

I suspect hardware but try rmsf /dev/console and then insf -e to rebuild the psuedo & terminal drivers.

SEP

[Dagmar Bendová]

I´ve done it with no effect.
Dagmar